... power generator, air blower,water pump,instrument, etc. Corrugated NBR gasket Features: 1. Main materialNBR rubber, also can use Natural rubber ... ,Styrene-butadiene rubber,Butyl rubber,PU,EPDM,Neoprene, Silicone rubber, Fluorocarbon, Chlorohydrine rubber and Methacrylate rubber, etc ...